W78E052DLG - 8-bit 8051 MCU, 8KB Flash, 48-LQFP | Nuvoton
料号： W78E052DLG ✗ 停产W78E052DLG 概述
An 8-bit microcontroller is a compact embedded-controller category used to execute firmware, read inputs, control outputs, and manage system behavior in cost-sensitive electronics. Within the broader hierarchy, the W78E052DLG is a microcontroller, an embedded-processing IC, and a semiconductor designed around the established 8051 instruction set and peripheral ecosystem. Its 8KB flash capacity is suitable for small control routines and product-specific firmware, while its broad supply-voltage range supports both 3.3 V and 5 V system designs.
The key verified attributes include 8-bit processing, 8KB flash, 2.4 V to 5.5 V operation, a 48-LQFP package, and a manufacturer-described 6T/12T 8051 architecture configurable for compatibility with traditional 12T 8051 designs. The -40 °C to +85 °C operating-temperature range applies to the W78E052D family, while distributor material identifies the Pb-free W78E052DLG ordering code for operation from -40 °C to +70 °C. Exact RAM, clock, peripheral, and electrical timing values should be confirmed in the manufacturer datasheet before layout or firmware deployment.
Typical uses include security and alarm panels, barcode readers, KVM controllers, key phones, compact user-interface modules, and industrial-control equipment. In these systems, the microcontroller consolidates low-speed control logic while external components provide sensors, communications, displays, actuators, and power regulation. The 48-LQFP format offers enough pins for mixed signal and peripheral connectivity while remaining compatible with conventional surface-mount assembly.
Designers should verify the exact pin assignments, oscillator requirements, reset behavior, port-drive limits, and decoupling recommendations against the W78E052D datasheet. Because the family is NRND, new production designs should compare current Nuvoton 8051 options, while existing production can evaluate an explicitly documented drop-in alternative only after checking timing, firmware, mixed-signal, and lifecycle requirements.
This page combines verified manufacturer and distributor information, procurement data, lifecycle context, package details, and practical selection guidance. It also clearly identifies where package, timing, memory, and pricing details require confirmation rather than presenting unsupported assumptions as guaranteed specifications.
直接替换替代料： W78E052DLG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： W78E052DLG （相同外形与封装尺寸） ——差异在于 Core Architecture, Microcontroller Type.
W78E051DLG
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →W78E053DLG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
W78E054DLG
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
W78E052DLG-T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
W78E052DLG-TU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
W78E052DLG 最大额定值与电气特性
| Microcontroller Type | 8-bit 8051-compatible microcontroller |
| Program Memory | 8KB flash |
| Core Architecture | 6T/12T 8051 configurable architecture |
| Legacy Compatibility | Pin-compatible with traditional 12T 8051 devices |
| Operating Voltage Range | 2.4 V to 5.5 V |
| Nominal Supply Options | 3.3 V and 5 V systems |
| Family Operating Temperature Range | -40 °C to +85 °C |
| Distributor Ordering-Code Temperature Range | -40 °C to +70 °C |
| 封装 | 48-LQFP |
| Package Family | LQFP surface-mount package family |
| 安装类型 | Surface mount |
| Lead-Free Status | Pb-free |
| Manufacturer Lifecycle Status | Not Recommended for New Designs (NRND) |
| Target Applications | Security/alarm, barcode reader, KVM, key phone, UI, and IPC |
W78E052DLG lqfp surface-mount package family 引脚配置指南
W78E052DLG（lqfp surface-mount package family 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： W78E052DLG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
W78E052DLG 适用于 6 应用s: Security and Alarm Control Panels, Barcode Reader and Data-Collection Terminals, KVM and User-Interface Controllers, Industrial Embedded Control Modules, Power and Battery-Powered Control Boards, Legacy 8051 Product Maintenance.
Security and Alarm Control Panels
The W78E052DLG fits security and alarm panels because its 8051-compatible architecture supports the legacy control logic commonly used in these products, while the 48-LQFP package provides more I/O connectivity than a small-package MCU. Its 2.4 V to 5.5 V operating range also supports common alarm-board supply architectures. The manufacturer explicitly identifies security and alarm systems as target applications for the W78E052D family. Firmware timing, relay-drive limits, low-power behavior, and watchdog requirements should be validated against the datasheet before connecting external sensors or alarm outputs.
推荐
Barcode Reader and Data-Collection Terminals
The W78E052DLG is appropriate for compact barcode-reader and data-collection terminals that decode sensor or scanner data and perform local control functions. The verified 8-bit core and 8KB flash capacity suit compact embedded firmware, while the 48-LQFP package offers a practical mix of parallel I/O and serial connectivity. Its 2.4 V to 5.5 V supply range accommodates embedded system rails. Before design release, verify scan-rate timing, display-driver interface requirements, communications peripherals, memory endurance, and whether a current MCU is preferable for a new production program.
推荐
KVM and User-Interface Controllers
The W78E052DLG can serve as the local controller in KVM switches, key phones, and compact user-interface assemblies, where firmware coordinates button inputs, indicator outputs, display functions, and host-selection logic. Nuvoton explicitly lists KVM, key phone, UI, and IPC as target applications for the W78E052D family. The 8-bit architecture is appropriate for modest control workloads, and the 48-LQFP package supports a larger external-interface count. Engineers should confirm port multiplexing, debounce timing, display timing, and electrical characteristics for the exact firmware and peripheral configuration.
推荐
Industrial Embedded Control Modules
The W78E052DLG is suitable for low-cost embedded control modules that coordinate sensors, relays, indicators, and local automation functions. Its 2.4 V to 5.5 V operating range supports multiple industrial supply configurations, while the 8051 heritage simplifies migration of mature control code. The manufacturer describes the family as configurable and pin-compatible with traditional 12T 8051 devices, which can help preserve an existing board architecture. For new deployments, check industrial temperature expectations, electromagnetic robustness, watchdog availability, and long-term supply because the family is marked NRND.
推荐
Power and Battery-Powered Control Boards
The W78E052DLG can be evaluated for supervisory or low-duty-cycle control boards where an 8-bit processor manages power sequencing, status reporting, buttons, and communication. The 2.4 V minimum operating voltage supports low-voltage embedded rails, and the 8KB flash limit keeps firmware constrained but manageable for compact control logic. Battery designs still require verified sleep currents, oscillator start-up behavior, leakage, and load-switch behavior, none of which were present in the retrieved excerpts. Measure the complete board current rather than relying on processor specifications alone.
推荐
Legacy 8051 Product Maintenance
The W78E052DLG is especially relevant to maintenance programs for existing 8051 products because Nuvoton describes the W78E052D family as configurable and pin-compatible with traditional 12T 8051 devices. The 48-LQFP ordering code allows a controlled assembly substitution when the footprint and device functions match. A successful replacement requires exact validation of port functions, timing, memory organization, oscillator requirements, reset behavior, and firmware output files. Because the family is NRND, purchasing teams should secure remaining supply and schedule a broader redesign rather than treating the component as an active long-term platform choice.
推荐
推荐产品汇总
工程参考数据： W78E052DLG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | W78E051DLG | W78E053DLG | W78E054DLG | W78E052DLG-T | W78E052DLG-TU |
|---|---|---|---|---|---|---|
| Package | 48-LQFP | 48-LQFP | 48-LQFP | 48-LQFP | 48-LQFP | 48-LQFP |
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Program Memory | 8KB flash | 7KB flash | 9KB flash | 10KB flash | 8KB flash | 8KB flash |
| Operating Voltage Range | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V |
| Architecture | Configurable 6T/12T 8051 | 8051 family | 8051 family | 8051 family | Configurable 6T/12T 8051 | Configurable 6T/12T 8051 |
关键差异点
- Exact 8KB-flash configuration within the W78E052D family （对比 W78E051DLG)
- Broader flash headroom than the target within the same family （对比 W78E054DLG)
- Documented Pb-free ordering code （对比 W78E053DLG)
设计说明
Do not treat every 48-LQFP, 8KB-flash 8051 as a drop-in substitute. Verify the numbered pin assignments, port mapping, reset and oscillator behavior, memory organization, interrupt vectors, peripheral functions, and timing against the W78E052D documentation. The manufacturer confirms traditional 12T pin compatibility for the W78E052D family, but firmware and board-level requirements still govern whether a specific family member can be substituted without changes.
Plan the power tree for a 2.4 V to 5.5 V operating range and follow the manufacturer's pin, decoupling, and voltage-limit requirements. The retrieved excerpts do not include the complete pin table, so do not infer decoupling connections from a generic 48-LQFP drawing. Check whether the selected oscillator and external components remain valid across 3.3 V and 5 V operation, and confirm brownout and supply-tolerance behavior in the production datasheet.
Validate thermal performance at the maximum ambient temperature for the actual ordering code. Nuvoton describes the W78E052D family over -40 °C to +85 °C, whereas the Mouser snippet for W78E052DLG identifies -40 °C to +70 °C. The difference may reflect family versus order-code limits, so the lower verified ordering-code range should govern unless Nuvoton supplies a document explicitly extending the limit. Account for nearby regulator, switching, and power-device dissipation in the final board thermal analysis.
Preserve the 48-LQFP footprint, exposed-pad or thermal-connectivity requirements, solder-mask geometry, and pin-1 orientation of the existing board. The supplied search excerpts do not reveal the exact exposed-pad arrangement or land pattern, so obtain the official package drawing before generating PCB artwork. For an NRND family, also preserve trace and assembly documentation so the board can be serviced with genuine or fully qualified components.
合规信息
Mouser identifies W78E052DLG as Pb-free. Specific RoHS, REACH, halogen-free, and conflict-minerals declarations were not included in the verified data and therefore remain unknown. AEC-Q100 is not applicable because this is an industrial or embedded microcontroller rather than an automotive-qualified power device.
